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The terms "Linux" (commonly pronounced /ˈlɪnəks/ in English; variants exist) and "GNU/Linux" refer to the family of Linux kernel-based operating systems – and not to any one operating system. Their base components, i.e. the Linux kernel (more precisely its System Call Interface (SCI)), the GNU C Library or the uClibc, the GNU Core Utilities and a couple of more packages, make many Linux operating systems behave "unix-like" though none of the Linux distributions has bothered so far to actually become UNIX®-certified, mostly because of financial reasons.

Linux is one of the most prominent examples of free software and open source development: typically all underlying source code can be freely modified, used, and redistributed by anyone.

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Ubuntu /ˈbnt/ is a computer operating system based on the Debian GNU/Linux distribution. It is named after the South African ethical ideology Ubuntu ("humanity towards others") and is distributed as free and open source software. Ubuntu provides an up-to-date, stable operating system for the average user, with a strong focus on usability and ease of installation. Ubuntu has been selected by readers of desktoplinux.com as the most popular Linux distribution for the desktop, claiming approximately 30% of Linux desktop installations in both 2006 and 2007.

Ubuntu is composed of multiple software packages of which the vast majority is distributed under a free software license (also known as open source). The main license used is the GNU General Public License (GNU GPL) which, along with the GNU Lesser General Public License (GNU LGPL), explicitly declare that users are free to run, copy, distribute, study, change, develop and improve the software. Ubuntu is sponsored by the UK based company Canonical Ltd., owned by South African entrepreneur Mark Shuttleworth. By keeping Ubuntu free and open source, Canonical is able to utilize the talents of community developers in Ubuntu's constituent components. Instead of selling Ubuntu for profit, Canonical creates revenue by selling technical support and from creating several services tied to Ubuntu.

Canonical endorses and provides support for three additional Ubuntu-derived operating systems: Kubuntu, Edubuntu and Ubuntu Server Edition. There are several other derivative operating systems including local language and hardware-specific versions.

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Andrew Keith Paul Morton (born 1959 in England) is an Australian software engineer, best known as one of the lead developers of the Linux kernel. He currently maintains a patchset known as the mm tree, which contains not yet sufficiently tested patches that might later be accepted into the official Linux tree maintained by Linus Torvalds.

Since August 2006, Morton has been employed by Google but will continue his current work in maintaining the kernel.

Andrew Morton delivered the keynote speech at the 2004 Ottawa Linux Symposium. He is also a featured speaker at MontaVista Software's Vision 2007 Conference.

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We all know Linux is great... it does infinite loops in 5 seconds.
— Linus Torvalds,



Template:/box-header Linux as gaming platform - Linux kernel - List of Linux supported computer architectures - Desktop Linux - History of Linux - Linux adoption - Tux -- Linux distribution - Embedded Linux - Linux devices - Linux Foundation - Linux User Group

Technology: ext3ext4NetfilterKernel-based Virtual MachineFilesystem in UserspaceNetlinkCFQCompletely Fair Schedulerdm-cryptBtrfs

People: Linus TorvaldsAndrew MortonGreg Kroah-HartmanRusty RussellAlan CoxJens AxboeH. Peter AnvinTheodore Ts'oHarald Welte

Companies: Canonical Ltd.Red HatNovellMandriva Template:/box-footer




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